Landing: 19024b653d74

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Project / Subsystem

gcc / gcc

Date

2026-09-01

Author

Kugan Vivekanandarajah

Commit

19024b653d74af36b7743780fdafd92c1dce5f65

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: gcc
patch_id: —
commit_hash: 19024b653d74af36b7743780fdafd92c1dce5f65
source_type: github
headline: AutoFDO: Avoid inserting null PHI profile matches.
tldr: Fixes AutoFDO crash by preventing null pointers in profile matching.
author: Kugan Vivekanandarajah
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • optimization
• autofdo
• bugfix
• performance
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/19024b653d74af36b7743780fdafd92c1dce5f65
date: 2026-09-01T00:00:00.000Z

This commit resolves an internal compiler error in AutoFDO when processing SPEC CPU 2026. It prevents the insertion of null pointers into the set of matched profile entries, which occurred because PHI nodes lack source locations. This ensures correct profile matching.